January 2022 in “Journal of Cosmetic Dermatology” This study found that placebo groups in split-scalp PRP trials for androgenetic alopecia showed less hair loss compared to whole-head trial placebo groups, likely due to PRP diffusion in split-scalp designs.
10 citations
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May 2021 in “International Journal of Cosmetic Science” This study found that split-head paired design trials are as effective as whole-head parallel design trials in differentiating anti-dandruff shampoos through scalp flaking measurements, but are more efficient and cost-effective, requiring fewer participants to achieve similar results.
1 citations
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August 2022 in “Journal of Drugs in Dermatology” This study found that the efficacy of platelet-rich plasma in treating androgenetic alopecia is higher with increased frequency of sessions, chemically-activated PRP, double centrifugation, and whole-head application, among younger and female patients.
May 2019 in “Journal of clinical oncology” This study found that concurrent chemotherapy with radiotherapy may increase the risk of grade 2 persistent radiation-induced alopecia, while topical minoxidil showed potential benefits, though more research is needed on its efficacy.
25 citations
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August 2017 in “Lasers in Medical Science” This literature review reported that fractional lasers, like the 1550-nm nonablative erbium-glass laser, may enhance hair regrowth by stimulating a wound healing process, but more randomized controlled trials are needed to confirm their effectiveness and optimize treatment parameters.
